May 2002 in “British Journal of Dermatology” This brief article is a response from the authors about hair density, hair diameter, and female pattern hair loss, and it reports no new clinical findings.
1 citations
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November 2022 in “Pharmaceutical research” In this study, the authors found that applying hypobaric pressure to the skin significantly increases the transdermal permeation of large molecules by enhancing diffusion, despite the associated skin stretching and hair follicle enlargement not fully explaining this effect.
1 citations
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May 2002 in “British Journal of Dermatology” This article provides an overview of hair density, hair diameter, and the prevalence of female pattern hair loss but reports no new clinical findings.
31 citations
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February 2020 in “BioMed Research International” This study found that in the Thai population, hair density varies by scalp location and decreases with age, and that Asians generally have lower hair density compared to Caucasian and African populations.
2 citations
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August 2019 in “International Journal of Cosmetic Science” This study observed that the biophysical properties of hair in Caucasian females with brown hair significantly change with age, and smoking or being overweight was linked to smaller hair cross-sectional areas.